Try using a stiffer spring and readjust the fittings for the same boost. This should give you smoother open/close of the mbc. Also make sure the surface the ball is pressing against inside the fitting is clean and smooth. If it's dinged up or rough at all use a tapered honing stone (like the ones you use in a dremmel tool) to clean it up, or better yet, jsut go back to the hardware store and buy one that has a nice clean finish inside.
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Originally Posted by NZ_GTiR
Made this one today.. Very good idea and I see how it works, but, I got really bad boost spiking..
Wastegate = 7psi, and I slowly up'd the boost with the homemade mbc,
Spike to 10, back down to 7-8 ish
spike to 13, back down to 7-9 ish
Spike to 16, back down to 7-9 ish
Anyone have any ideas?
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